Artistic impression of a Deep Green array at Holyhead Deep

Project and technology development

Functionality and power production of the Deep Green technology have been verified in ocean testing of scale prototypes. To date, five prototypes have been built and tested, and electricity was first produced in 2009. The first commercial-scale project of the Deep Green technology is well underway.

The first test of Deep Green in an authentic ocean environment was completed by the end of 2011. In 2013, a prototype with a 3-meter wing was deployed in Northern Ireland and that scale has since that been undergoing extensive testing in the tidal streams of Strangford Lough.

Minesto's research and product development plan is to continue prototype testing in Northern Ireland, and in parallel build and commission the first commercial-scale 0.5MW Deep Green device in Holyhead Deep, Wales. The first installation, planned to 2017, will be followed by a gradual expansion to a 10MW array. In February 2017, Minesto announced plans to expand the installed capacity in Holyhead Deep to 80MW.